@global-bg-color: #f2f2f2; // 全局背景颜色

body {
  margin: 0;
  background-color: @global-bg-color;
}

// 水平居中+垂直居中
.hold-m-c {
  display: flex;
  align-items: center;
  justify-content: center;
}

// 子路由最上面板
.tree-hold-top-panel {
  position: absolute;
  width: 320px;
  height: 100vh;

  background-color: @global-bg-color;
  top: 0;
  left: 0;
}
